Related Party Transactions - Additional Information (Detail) - USD ($)									1 Months Ended					3 Months Ended					6 Months Ended		12 Months Ended
	Aug. 11, 2020	Jun. 30, 2020	Dec. 31, 2019	Aug. 31, 2019	Jun. 26, 2019	May 18, 2017	Oct. 17, 2016	Feb. 02, 2016	Jul. 31, 2020	Jun. 30, 2020	Jan. 31, 2020	Sep. 30, 2019	Jan. 31, 2019	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Jun. 29, 2018
Related Party Transaction [Line Items]
Advisory agreement renewed additional term					1 year
Advisory agreement commencing date					Jun. 29, 2019
Advisory agreement completion date					Jun. 29, 2020
Advisory agreement amendment description																			The purpose of Amendment No. 1 was to amend the monthly asset management fee from one-twelfth of 1.25% of the cost of the Company’s investments at the end of the month to one-twelfth of 1.20% of the Company’s most recently disclosed NAV.
Monthly asset management fees percentage					0.1042%														0.10%
Percentage of organization and offering costs to gross offering proceeds																			1.00%		1.00%
Organization and offering costs incurred by advisor on behalf of Company																			$ 9,907,863		$ 8,613,586
Due to related parties		$ 1,861,062	$ 2,057,181							$ 1,861,062					$ 1,861,062				1,861,062		2,057,181	$ 2,742,581
Reimbursable acquisition expenses incurred by advisor on behalf of the Company																			0
Unreimbursed operating expenses incurred by advisor																			$ 8,821,870
Disposition fee as percentage of contract sales price		2.00%								2.00%					2.00%				2.00%
Disposition fee threshold as percentage of contract sales price																			6.00%
Disposition fees on principal amount of debt																			$ 0		0
Selling commission																			400,293		1,671,545
Due from related party		$ 310,255	$ 49,910							$ 310,255					$ 310,255				310,255		49,910
Return of excess amount of reimbursed of selling commissions																$ 44,135
Dealer manager fees incurred																			420,684		1,249,678
Dealer manager fees reimbursed																			4,069,122		3,660,273
Sponsor support payments received related to dealer manager fees																5,775
Common stock															7,116,579	11,039,819	$ 12,364,156	$ 13,604,281
Common stock, shares		5,994,996	5,332,169
Scenario, Forecast [Member]
Related Party Transaction [Line Items]
Sponsor support payments received related to selling commission														$ 17,181
Sponsor support payments received related to dealer manager fees														$ 17,610
Operating Expenses [Member]
Related Party Transaction [Line Items]
Due to related parties		$ 204,253	$ 204,253							204,253					204,253				$ 204,253		204,253	$ 1,004,539
Class T [Member]
Related Party Transaction [Line Items]
Common stock															$ 492	$ 662	$ 884	$ 1,137
Common stock, shares		1,440,760	1,327,819												49,180	66,220	88,364	113,727
Class A [Member]
Related Party Transaction [Line Items]
Common stock								$ 200,001							$ 1,447	$ 1,512	$ 2,745	$ 2,636
Common stock, shares		3,402,643	3,150,616					8,180							144,689	150,441	274,447	263,629
Class I [Member]
Related Party Transaction [Line Items]
Common stock						$ 2,000,000									$ 892	$ 2,151	$ 1,115	$ 1,483
Common stock, shares		1,151,593	853,734												89,113	215,102	111,436	148,278
Primary Offering [Member] | Class I [Member]
Related Party Transaction [Line Items]
Common stock							$ 2,000,000
Primary Offering [Member] | Subsequent Event [Member]
Related Party Transaction [Line Items]
Common stock, shares	6,189,045
Maximum [Member]
Related Party Transaction [Line Items]
Disposition fee as percentage of principal amount of debt																			1.00%
Asset Management Agreement [Member]
Related Party Transaction [Line Items]
Monthly asset management fees percentage				0.1042%								0.10%
Due to related parties		$ 137,070								137,070					$ 137,070				$ 137,070
Management fee description																			Asset management fees are due to the Advisor. Asset management fees payable to the Advisor prior to September 2019 consisted of monthly fees equal to one-twelfth of 1.25% of the cost of the Company’s investments at the end of each month. Asset management fees payable to the Advisor as of September 2019 consist of monthly fees equal to one-twelfth of 1.20% of the Company’s most recently disclosed NAV.
Fees and expenses, incurred															407,026		$ 513,792		$ 793,437	$ 1,015,490
Property Management Agreement [Member]
Related Party Transaction [Line Items]
Property management fees										$ 25,117					$ 36,344		$ 26,334		$ 72,688	52,410
CFI and Company Reimbursement Agreement [Member]
Related Party Transaction [Line Items]
Cumulative, non-compounded annual pre-tax return		6.00%								6.00%					6.00%				6.00%
Sponsor support payment made by related party subject to reimbursement																			$ 5,209,692		4,675,394
Due from related party		$ 1,157,751	$ 1,059,256							$ 1,157,751					$ 1,157,751				1,157,751		1,059,256
Reimbursed of selling commissions																			$ 1,140,570		1,015,121
CFI and Company Reimbursement Agreement [Member] | Class I [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI																			1.50%
Common stock																			$ 1,132,280
Purchase of shares to satisfy minimum offering requirement																			2,000,000
CFI and Company Reimbursement Agreement [Member] | Maximum [Member] | Class I [Member]
Related Party Transaction [Line Items]
Purchase of shares by CFI																			$ 5,000,000
CFI and Company Reimbursement Agreement [Member] | Maximum [Member] | Common class A and class T [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI																			4.00%
CFI and Company Reimbursement Agreement [Member] | Maximum [Member] | Primary Offering [Member] | Class I [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI																			1.50%
CFI and Company Reimbursement Agreement [Member] | Maximum [Member] | Primary Offering [Member] | Common class A and class T [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI																			4.00%
Advisor and Dealer Manager Agreement Transaction Agreement [Member] | Class I [Member]
Related Party Transaction [Line Items]
Selling commissions payable																			$ 0
Advisor and Dealer Manager Agreement Transaction Agreement [Member] | Maximum [Member] | Primary Offering [Member] | Class T [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions on gross offering proceeds																			2.00%
Advisor and Dealer Manager Agreement Transaction Agreement [Member] | Maximum [Member] | Primary Offering [Member] | Class A [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions on gross offering proceeds																			5.00%
Advisor and Dealer Manager Agreement Transaction Agreement [Member] | Maximum [Member] | Primary Offering [Member] | Class I [Member]
Related Party Transaction [Line Items]
Percentage of dealer manager fee on gross offering proceeds																			1.50%
Advisor and Dealer Manager Agreement Transaction Agreement [Member] | Maximum [Member] | Primary Offering [Member] | Common class A and class T [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions on gross offering proceeds																			1.00%
Percentage of dealer manager fee on gross offering proceeds																			3.00%
Advisor And Dealer Manager [Member] | Maximum [Member] | Primary Offering [Member]
Related Party Transaction [Line Items]
Percentage of organization and offering costs to gross offering proceeds of offering																			15.00%
Advisor [Member]
Related Party Transaction [Line Items]
Reimbursement of organization and offering costs on monthly basis, expiration date																			May 18, 2021
Cumulative, non-compounded annual pre-tax return																							6.00%
Leasing fees																			$ 0		0
Refinancing coordination fee percentage																			0.75%
Recapitalization fee																			$ 0		0
Advisor [Member] | Operating Expenses [Member]
Related Party Transaction [Line Items]
Due to related parties		204,253								204,253					204,253				204,253
Reimbursement payments for costs incurred													$ 1,004,539
Advisor [Member] | Unreimbursed Operating Expenses [Member]
Related Party Transaction [Line Items]
Fees and expenses, incurred																			$ 1,377,647
Reimbursable operating expenses																				1,410,716
Advisor [Member] | Primary Offering [Member]
Related Party Transaction [Line Items]
Additional percentage of organization and offering expense of gross offering proceeds																			1.00%
Estimated percentage of organization and offering expense of gross offering proceeds																			1.00%
Reimbursement of organization and offering costs on monthly basis, expiration date																			May 18, 2021
Advisor [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Percentage of average invested assets																			2.00%
Percentage of net income																			25.00%
Advisor [Member] | Maximum [Member] | Operating Expenses [Member]
Related Party Transaction [Line Items]
Net asset value per share																							$ 25.00
Advisor [Member] | Maximum [Member] | Primary Offering [Member]
Related Party Transaction [Line Items]
Percentage of organization and offering costs to gross offering proceeds																			1.00%
Advisor [Member] | Organization And Offering Costs Payable [Member]
Related Party Transaction [Line Items]
Due to related parties		626,630	789,661							626,630					626,630				$ 626,630		789,661
Advisor [Member] | Organization And Offering Costs Payable [Member] | Primary Offering [Member]
Related Party Transaction [Line Items]
Due to related parties		626,630	789,661							626,630					626,630				626,630		789,661
Reimbursement payments for costs incurred																			920,917		587,774
Advisor [Member] | Organizational Costs [Member]
Related Party Transaction [Line Items]
Due to related parties		90,676	90,232							90,676					90,676				90,676		90,232
Advisor [Member] | Offering Costs [Member]
Related Party Transaction [Line Items]
Due to related parties		1,456,871	1,287,203							1,456,871					1,456,871				$ 1,456,871		1,287,203
Advisor [Member] | Asset Management Agreement [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Percentage of average invested assets																			2.00%
Percentage of net income																			25.00%
Dealer Manager [Member] | Class T [Member]
Related Party Transaction [Line Items]
Annual distribution fee percentage																			1.00%
Payment of distribution fees											$ 25,751								$ 151,462	$ 119,614
Distribution fees due		24,194	25,751							24,194					24,194				$ 24,194		25,751
Dealer Manager [Member] | Subsequent Event [Member] | Class T [Member]
Related Party Transaction [Line Items]
Payment of distribution fees									$ 24,194
Dealer Manager [Member] | Maximum [Member] | Class T [Member]
Related Party Transaction [Line Items]
Percentage of underwriting compensation - gross proceeds of IPO																			10.00%
Percentage of underwriting compensation - total gross investment																			10.00%
Dealer Manager [Member] | Maximum [Member] | Class A [Member]
Related Party Transaction [Line Items]
Percentage of underwriting compensation - gross proceeds of IPO																			10.00%
Dealer Manager [Member] | Maximum [Member] | Class I [Member]
Related Party Transaction [Line Items]
Percentage of underwriting compensation - gross proceeds of IPO																			10.00%
Dealer Manager [Member] | Distribution Fee Payable [Member] | Class T [Member]
Related Party Transaction [Line Items]
Due to related parties		$ 867,992	919,819							$ 867,992					$ 867,992				$ 867,992		919,819
Advisor and Affiliate [Member] | Property Management Agreement [Member] | U.S. [Member]
Related Party Transaction [Line Items]
Property management fees percentage																			1.50%
Oversight fee percentage																			1.00%
Advisor and Affiliate [Member] | Property Management Agreement [Member] | Non-U.S. [Member]
Related Party Transaction [Line Items]
Property management fees percentage																			2.00%
Oversight fee percentage																			1.50%
Other Related Party [Member] | Property Management Agreement [Member]
Related Party Transaction [Line Items]
Oversight fee percentage																			2.00%
CFI [Member]
Related Party Transaction [Line Items]
Cumulative, non-compounded annual pre-tax return		6.00%								6.00%					6.00%				6.00%
Sponsor support payment made by related party subject to reimbursement																			$ 5,209,692
Common stock																			$ 4,782,281
Common stock, shares																			191,337
CFI [Member] | Class A [Member]
Related Party Transaction [Line Items]
Common stock								$ 200,001											$ 200,001
Common stock, shares								8,180											8,180
Per share purchase price for shares of common stock in IPO								$ 24.45
CFI [Member] | Class I [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI																			1.50%
Common stock																			$ 4,582,280
Common stock, shares																			183,157
CFI [Member] | Maximum [Member] | Common class A and class T [Member]
Related Party Transaction [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI																			4.00%
CFI [Member] | CFI and Company Reimbursement Agreement [Member]
Related Party Transaction [Line Items]
Due from related party		$ 310,255	$ 49,910							$ 310,255					$ 310,255				$ 310,255		$ 49,910
CFI [Member] | Distribution Support Agreement [Member] | Class I [Member]
Related Party Transaction [Line Items]
Common stock																			$ 3,132,280
Common stock, shares																			125,157
Purchase of shares to satisfy minimum offering requirement																			$ 2,000,000
CFI [Member] | Distribution Support Agreement [Member] | Maximum [Member] | Class I [Member]
Related Party Transaction [Line Items]
Purchase of shares by CFI																			$ 5,000,000